googletest: Add SOVERSION guard

%ci:no-build

packages/googletest/build.sh

@@ -13,3 +13,14 @@ TERMUX_PKG_CONFLICTS="libgtest"
 TERMUX_PKG_REPLACES="libgtest"
 TERMUX_PKG_EXTRA_CONFIGURE_ARGS="-DBUILD_SHARED_LIBS=ON"
 
+termux_step_post_get_source() {
+	# Do not forget to bump revision of reverse dependencies and rebuild them
+	# after SOVERSION is changed.
+	local _SOVERSION=1.12.1
+
+	local v=$(sed -En 's/^set\(GOOGLETEST_VERSION\s+([0-9.]+).*/\1/p' \
+			CMakeLists.txt)
+	if [ "${v}" != "${_SOVERSION}" ]; then
+		termux_error_exit "SOVERSION guard check failed."
+	fi
+}